Electric alarm-clock.



Patented Aug. 22, I899.

LGULDENBERG, N. KUMUW 8|. GUTTERMAN.

ELECTRIC ALARM CLOCK.

(Appliclition filed Sept. 20, 1598. (No Model.) v 2 Sheets-Sheet l.

No. 63|,63l. I Patented Aug. 22, I899.,

-J. GOL DENBERG, N. KOMOW & L. GUTTERMAN.

ELECTRIC ALARM CLOCK.

(Application filed Sept. 20, 1898.)

(No Model.) 2 Shaets-Sheet 2 W/ TNE SSE S A 770ml 3.

TH! awry: PETzni 00., marouma, WASHINGTON, a. c.

UNITED STATES PATENT OFFICE,

JACOB GOLDENBERG, NICHOLAS KOMOVV, AND LION GU'ITERMAN, OF NIHV YORK, N.Y.

ELECTRIC ALARM-CLOCK.

SPECIFICATION forming part of Letters Patent No. 631,631, dated August22, 1899.

Application filed September 20, 1898. Serial No. 691,425. (No model.)

To aZZ whom it 11mg concern.-

Be it known that we, JACOB GOLDENBERG,

of New York, borough of Manhattan, county of New York, NICHOLAS KoMow,of New York, borough of Brooklyn, county of Kings, and LION GUTTERMAN,of New York, borough of Manhattan, county of New York, State of NewYork, have invented new and useful Improvements in Alarm-Olcks, of whichthe following is a full, clear, and exact description.

This invention relates to improvements in electric alarm-clocks and theobject is to provide an alarmclock ofthis character in which theinciting-batteryis arranged wholly within the casing containing the timemehanisrn and forms a back for-said casing, thus comprising the wholedevice in a comparatively small compass, and, further, to provide analarm-clock of simple construction and comparatively cheap tomanufacture.

We will describe an alarm-clock embodying our invention, and then pointout the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is apartial section and partial elevation of an alarm-clockembodying our invention. Fig. 2 is a rear elevation of the electricmechanism, the case and the hell being shown in section and the batterybeing removed. Fig. 3 is a vertical sectional view of the casing,showing acircuit-closer and the front of the battery; and Fig. 4 is asection on the line 4 a of Fig. 3.

Referring to the drawings, 1 designates a clock-casing, 2 the dial, and3 the front socured in the frame 4, having a hinge connection 5 with thecasing. Arranged within the casing is a metal frame 6, containing thetime mechanism 7, which is of the usual construction, and therefore neednot be described in detail.

Mounted to rotate on the arbor 8 for the hour-hand 9 and extendedthrough the dial 2 is a sleeve 10, of insulating material. Se"

cured to the outer end of the sleeve 10 and designed to move around thedial is an alarmsetting hand 11, and mounted on the inner end of saidsleeve .10 is a contactpoint 12,

which must be in line with thehand 11. This contact-point 12 is heldyieldingly against a washer 13, which abuts against a shoulder on theend of the sleeve 10 by means of a spring-plate let, which has abifurcated up-- per end to engage around the sleeve 10 and press againstthe contact-point12. Thelower end of this plate 14 is secured to a block15, of insulating material, and it 'forms part of the electric circuit,as will be hereinafter described.

Secured to the back of the frame 6 is a plate 16, upon which is mountedan electromagnet 17, and also mounted on this plate is the armature 18,coacting with the electromagnet and having an arm 19 extended outwardthrough an opening in the casing 1 and provided with a striker 20 forstrikinga gong 21, secured on the casing. One end of the electromagnet17 is connected to the plate 16, which is in electrical connection withthe frame 6 by means of a wire 22. The other end of the electromagnet 17hasa connection 23 with a curved yielding contact-plate 24-, mounted ona block 25, of insulating material, secured to the plate 16. Alsosecured to this block 25 is another spring yielding contact-plate 26,having a connection 27 with the spring-plate 14.

Removably arranged in the rear portion of the casing and forming aclosure therefor is abattery28, the front metal wall 29 of which formsone of its poles, while the other pole is indicated at 30. held inposition by means of a pin 31, extending from the battery into abayonet-slot 32, formed in the casing 1. W hen the batteryis inposition, the contact-plate 24 is in yielding engagement with the pole29 of the battery, and to open and close the circuit between the pole 30and the contact 26 we have here shown a two pronged yielding contact-'plate 33, mounted on a stem 34, which projects out ward through abushing 35, of insulating material, arranged in the clock-casing.

In operation the contact 33 is to be moved into engagement with thecontact 26 and pole 30. Then the alarm setting hand 11 is to be rotatedto point to the hour at which it is desired that the alarm shall sound.Of course this arm may be readily rotated after swing- This battery isremovably ing open the clock-front. When the hourhand points to thedesired hour, a contactiinger 30, arranged on the inner end of its arborand parallel with said hour-han d, will engage with the contact-point12,thus com pleting the circuit and energizingthe electromagnet to soundthe alarm. The current will be as follows: from the pole of the batterythrough the contacts 33 and 26, the wire 27, the spring-plate 14-, thecontact-point 12, the contact-finger 36, thence through the frame 0, theplate 16, the wire 22, the electromagnet, the wire 23, and the contact2% to the opposite pole of the battery. When not in use, the circuit isto be broken by drawing out the contact Having thus described ourinvention, we claim as new and desire to secure by Letters Patent 1. Anelectric clock, comprising a casing having an open rear end, a timemechanism in the casing and having a contact carried by its hounhand, analarm-setting hand carrying a contact, an electromagnet on the rear faceof the time-mechanism frame, a gong on the casing, a striker carried bythe armature of the electromagnet, contacts carried by thetime-mechanism frame, one of which is c011- nected with theeleetromag'net and with the contact of the setti ng-han d, a batteryfitting in the rear open end of the casing and forming a closure for thesame, the front wall of.

the battery forming one of its poles, and with which one of the contactscarried by the timemechanism frame engages when the battery is inposition, and a two-pronged contact mounted to slide in the casing andadapted to be moved into engagement with the other pole of the batteryand the other contact carried by the time-mechanism frame, substantiallyas described.

2. In an electric alarm-clock, the combination with a casing having anopen rear end, and a time mechanism in the casing, of an electromagnetcarried by the rear face of the time-mechanism frame, an alarm-sounderoperated by the electromagnet, contact-springs carried by thetime-mechanism frame a battery forming a closure for the rear end of thecasing and removably secured therein, the front wall of the batteryforming one of its poles and with which one of the contactspringsengages, and a two-pronged yielding contact, mounted to slide in thecasing and adapted to be slid into engagement with the other pole of thebattery and the other contact-spring, substantially as described.

JACOB GOLDEN'JVKERG. NICHOLAS KOMOW. LION GU'lTERhIAN.

Witnesses:

Evnnnno BOLTON MAnsIL-nm, i W. TIANAJIUHI).

